Pharmacokinetics of albendazole sulfoxide enantiomers administered in racemic form and separately in rats. 2008

Bettencourt P S Capece, and Gloria Castells, and Carlo Godoy, and Margarita Arboix, and Carles Cristòfol
Secção de Farmacologia e Toxicologia, Departamento de Para-Clínicas, Faculdade de Veterinária, Universidade Eduardo Mondlane, Maputo, Mozambique. bpscapece@yahoo.com

The pharmacokinetic behaviour of albendazole sulfoxide (ABZSO) enantiomers was studied in rats after the oral administration of 10 mg/kg of rac-ABZSO, 5 mg/kg of (-)-ABZSO or 5 mg/kg of (+)-ABZSO. The disposition profiles of ABZSO enantiomers were similar in all treatments, but the calculated area under the curve for the (-)-ABZSO was higher in all cases compared with (+)-ABZSO. The results suggest that there is no chiral inversion of ABZSO enantiomers. After the administration of rac-ABZSO, 17.2% of the total dose was recovered in urine as albendazole ABZ (0.1%), albendazole sulfone ABZSO(2) (0.3%), albendazole 2-aminosulfone (ABZ-SO(2)NH(2)) (3.1%) and ABZSO (13.7%). The ratio (+) to (-) was similar in urine (1.6) and blood (1.7).

UI MeSH Term Description Entries
D007536 Isomerism The phenomenon whereby certain chemical compounds have structures that are different although the compounds possess the same elemental composition. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Isomerisms
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000871 Anthelmintics Agents that kill parasitic worms. They are used therapeutically in the treatment of HELMINTHIASIS in man and animal. Anthelmintic,Antihelmintic,Vermifuge,Vermifuges,Antihelmintics
D015766 Albendazole A benzimidazole broad-spectrum anthelmintic structurally related to MEBENDAZOLE that is effective against many diseases. (From Martindale, The Extra Pharmacopoeia, 30th ed, p38) Albendazole Monohydrochloride,Albendoral,Albenza,Andazol,Bendapar,Bilutac,Digezanol,Disthelm,Endoplus,Eskazole,Gascop,Lurdex,Mediamix V Disthelm,Metiazol,SK&F-62979,SKF-62979,Valbazen,Zentel,Monohydrochloride, Albendazole,SK&F 62979,SK&F62979,SKF 62979,SKF62979
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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